krueger



(No Model.)

1 4 Sheets-Sheet 1. A. G. KRIEG-BR.

BELT TRIMMING MACHINE.

No.. 255,638. Patented Mar.v2`8,1'88`2..-

4 Sheets-Sheet 2,

(N Model.)

A. c. KRUBGBR.

BELT TRIMMING MACHINE.

Patented Mar. 28,1882.

4 Sheets- Sheet 3.

(No Model.)

1a. o. KRUBG'BR, BELT TRIMMING MACHINE.

Patented Mar. 28, 1882.

(No Model.) A 4 sheetssheen 4 A. VC.l KRUEGER.

BELT TRIMMING MACHINEr No. 255,638. Patented Mar. 28.1882.V

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UNITED STATES` PATENT OEEICE.

AUGUST C. KRUEGEE, CE CHICAGO, ILLINOIS, ASsIeNoR To THE CHICAGO- EAWIIIDE MANUFACTURING COMPANY, on SAME PLACE. l

BELT-TRINIMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 255,638, dated March 2B, 1882.

" Application filed June 13, 1881. (No model.)

To all whom it may concern:

Be it known that I, AUGUS'I C. KEUEGEE, a citizen of the United States, residing in Chicago, county of Cook, and State of Illinois, 5 have invented a certain new and useful Belt- Trimming Machine, of which the following is a specification. x Y

My invention relates to improvements in belt-trimming machines in which rollers are 1 a employed for conducting the belting of leather to `oneor more knives operating upon one or both edges of` the belting; and the objects of myinventio'n are, first, to automatically feed the beltin g to one or more cutting-knives operatingupon one or both edges; second, to direct the beltin g to the cutting knife or knives so that it will be trimmedV evenly and straight both asto the thickness and length of the belting when in contact with the knife or knives; 2o fourth, to trim belting oi' varying widths and thicknesses 5 fifth, to trim both edges simultaneously; sixth, to trim and finish or convex one or both edges of the belting successively and by a continuous operation; seventh, to trim one or both edges and, with or without convexing oneI or both edges, coil the belting as it passes from the cutting or trimming blades, for storage or shipment; and, finally, to providemeans for removably securing the 3o belting upon the ceiling-drum. I attain these objects by devices illustrated in the accompanyingdrawings, in which- Figure lis a perspective of a machine embodying my invention with the frame-work and supports removed. Fig. 2 is a central longitudinal section of the same, showing the position of the beltin g during the operation of the machine; Fig. 3, a longitudinal section through one ot' thel guide.- rollers transversely- 4o of its supporting and slotted bar; Fig. 4, a detail perspective of one oi' the guide-plates at the frontend ofthe machine; Fig. 5, a similar and sectional view, showin g the concaved trimming-blades; Fig. 6, a plan view ofiny machine without the ceiling-drum; Fig. 7, a perspectiveof one of the concave guides 5 Fig. 8, a longitudinal section through one of the guideplates, showing the meansfor adjustably securing the same upon its slotted supporting-bar; Fig. 9, a detail perspective of one 5ol plane above and to said drum.

Similar letters of reference indicate the same .parts in the several figures of the drawings.

A A represent two horizontal pressure-rollers, journaled inI the sides ofthe frame-work of the machine and extending its entire width, and adapted .to flatten and, with other devices to be presently described, give tension to the belting during its passage through the ma-4 chine. The upper roller is adjustable upon the 7o lower roller by reason of its gravity and tha-t it isjournaled in an elongated beariugjgjbut this upper roller may be rmade adjustable by means of a spring or by a slidingjournal-box operated in the usual inannerby a screw-` threaded bolt.

In front of the pressure-rollers are two vertical guide-rollers, B B, which engage with the. edges of and cause the belting to move in a straight line through the pressure-rollers to* 8o the cutting-blades without respect to the particular positionwhich the belting may occupy with reference to the cutting-blades upon the bench or roller from which it is fed. `These Y guide-rollers have an end bearing on a longitudinally-slotted transverse bar,B', eXtending across the frame-work of the machine,and are 1 adjustably held upon the slotted bar by means of headed bolts b b, which are inserted beneath the bar and through the roller, and are held 9o by means of thumb-nuts, a a, upon their ends.

.projecting above the rollers,thus enabling the adjustment of the vertical rollers toward or from each other, as the belting may be Wide 0r narrow. y l .y Y

Bolts b b have adjacent lo theirV heads, which are held against the under Vside of thebagr, square shoulders b b', which, entering the slot in the bar, prevent the bolts from turning and the thumb-nuts from becoming loosened, and enable the tightening of the nuts without the necessity of holding the bolt.

In front ofthe pressure-rollers, and in a plane with their adjacent peripheries, are two horizontal guide-plates, C C, having L-shaped edges, (see Fig. 4,) and mounted upon a slotted bar, c, upon which they are similarly adj ustable and for the same purpose as the guide-rollers, to, which they are not only auxiliary in directing the strip to the cutting-blades, but, by reason of their overlapping the outer edges ofthe face of the belting, also in preventing the beltingfrom curling uponits outer edges, which it has a tendency to do under a longitudinal strain.

1 Pivoted on a transverse shaft, d, journaled in lthesides of the machine above these guideplates, is a broad horizontally-operating tension-blade, D, operating; at an angle against block or plate of wood D', having its face on a plane with that of the guide-plates and forming a solid base, over and between which and the swinging plate the belting travels and is held under tension by the swinging plate. This swinging tension-plate is operated by a lever or rod, e, secured to the cnd of shaft d, and carrying upon its free enda ball, E, which may be made adjustable along the lever to increaseor diminish its effects upon the tensionplate by means of' a set-screw passing through it and binding upon the lever.

Mounted above the guide -plates C C on a transverse bar, f, areblocks or heads F F, ad-

justable by means of set-screws f'f' along said bar, each head being provided with a slot ent'ending at an oblique angle from top to bottom,through which passstraightcutting-blades GG, as clearly shown in Fig. 2. These blades extend atan angle of about forty-tive degrees tothe plane of the passing belting, to facilitate V"cutting, and are adjustable by means of setscrews g g, so that as a portion of the edges becomes dulled by frequent use the blades may be shifted and a sharp edge presented, thus avoiding frequent sharpening. Blades G G may have a rib on their back and the blocks `"andthe blade's adjusted to simultaneously trim both"edge`s of the belting of varying widths,

and should thin blades be used itis advisablel tofhave an adjustable clamp connecting the lower'e'uds ofV the blades with the plate D' to '-holdthemri'gid against a lateral movement andprevent them from twisting when in operation. i

A`In the rear of the inclined cutting-blades is an' anti-friction roller, H, upon the lower face *of which the passing belt moves and is prevented from rising. This roller may operate todep'r'ess the'belting to cause the latter to tavelionan incline against the blades for facilitating cutting.

the sameI manner as guide-plates C C, beforeV described.

K K are oppositely-arranged concave trimming-blades, the backs of which are square and tit in a corresponding groove in an L-plate, K', contiguous to the concave guide, but slptted on top' to allow the trimmings to pass away from the blades. The edges of these blades are on their forward ends, and are formed by a bevel on their backsas clearly shown in Fig. 5.

Trimmingblades K K (so termed because they round and trim the edges of the belting after being operated upon by the straight knife-blades) are removably secured in the guides in any suitable manner, and while conforming to the shape of the guides project beyond the same sufficiently to successfully operate upon the belting as it passes from the guides.

It will be understood that owingto the variable thicknesses of different belting several sizes of concaved guides with corresponding knife-edges are necessary; but as they are readily removed from the machine, little or no inconvenience is experienced in making the substitution. n

Resting upon the concaved guide-plates and forward of the trimming-blades is a pressureroller, Ll, which may be adjustable, and is adapted to press or Hatten the belting during its passage through the guides and to so hold the vstrip when presented to the trimmingblades. Y

In the rear of the convexed guide-plates is 'an anti-friction roller,M, over which the belting "passes to a drum, N, (see Figs. 1 and 12,) which is on a plane lslightly below the roller M, as clearly shown in Fig. 1.

Drum N is carried upon a shaft, n, having its projecting end squared and surmounted by a rib, n', the drum having a T'groove corresponding therewith to adapt it to be removably passed upon the shaft.

The object in having the drum so secured upon v the shaft is to prevent its turning upon the shaft when the shaft is revolved, the rib serving to permit the inner coil of the belt wound upon the drum to slacken when the drum is removed, so that the coiled belting may be readil removed.

It will be un erstood thatthe drum and shaft, when revolved by suitable gearing, (shown in Fig. 1,) are the power by which the belt or strip is drawn through the trimming-machine, the

end of the belting of course being rigidly se-` cured to the drum and shaft.

By constructing the drum as shown in Fig. 2 the end of the belt may be secured by inserting it between the drum and the rib; butl may make a two-part drum and hin ge, the same as IOO IOS

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shown in Fig. 13, using a tightening-ring, P, and screw p to clamp the drum upon the shaft. In some respects this latter construction is preferable for the reason that the drum may be swungopen, and the end ofthe beltiug inserted, when the drum may be closed upon the shaft, and the clamping-ringP is quicklyslipped upon the arm and tightened by the set-screw b, thus requiring less skill and time for attaching the belt.

In operation, after adjusting the parts to the width and thickness of the belting to be trimmed, the free end ofthe belting is passed between the vertical and pressure rollers, the

first set of guide-plates, and thence under the swinging tension-plate, and is drawn by hand between the cuttin g-blades, the concaved guide and blades, and then secured to the drum, after which the tension-plate is lowered to its op` erative position and the drum set in motion, no further attention being required, except to remove the belting from the drum when it is full and insert another in the same manner".

Although I have shown and described myV cutting and trimming blades in pairs it may be desirable in some instances to trim the belting upon but one side, in which ease one of the blades is removed and the guide-plate substituted. So, also, both .trimming-blades may be removed when it is not desirable to convex the edge ofthe belting, which is the casewhen the strip is quite thin.

While it forms no part of my invention, I may attach to my machine, for convenience in determining the amount of belting passing through it, a measuring or registering instrument, such as is commonly used in cloth, carpet, paper-manufacturin g, and envelope machines, &c., for that purpose.

Asmy machine is at present constructed the roller H is best adapted for operating the measuring instrument, for the reason that when the roller is depressed upon the already taut belting its movement is more positive with'the betting than any of the other rollers.

Having thus-described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a machine for trimming belting, one or more obliquely-arranged straight-cutting blades, one or more concave-trimming blades, arranged relative to each other, as and for the purpose described, and means for guiding and conducting4 the belting to said blades.

2. The combination, with the adjustable and straight-cutting blades, having their cuttingedges at an oblique angle, as described, of' the laterally-adjustable blocks carrying said blades. o

3. The combination, with the straight-cut'- and with mechanism for drawing the belting through the machine, of a tension clampingplate and abase supportfor the same, arranged between said mechanism and roller, for the purpose described.

6. The combination,with the pressure-rollers and with the actuating mechanism., of an adjustable and swinging tensionplate, arranged substantially and for the purpose described.

7. In combination with the straight-cutting blades, a tension-plate arranged below and just in front of said blades, as and for the purpose described. i

8. In combination with the cutting-blades and with the swinging tension-plate, guides arranged in the rear ot' said blades and adapted to embrace the edges ot' the belting, as set forth.

9. The vertical guide-rollers, pressure-rollers, guide-plates C C, and tension-plate, in combination with the cutter-blades, all arranged and operating substantially as described.

10. The tension-plate and pressure tensionroller H, in combination with the obliquelyarranged cutting-blades between said plate and roller.

l1. In a' machine for trimming belting, the combination, with the guides, of one or more concave blades simultaneouslyr adjustable laterally, as described. j

12. The combination,with the concave guides and one or more corresponding trimmingblades, of a ceiling-drum and an anti-friction roller intermediate said blades and drum and arranged in a plane above the drum, as and for the purpose described.

13. The combination, with a -revolvin g shaft,

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of a winding-drum removably sleeved upon said shaft and provided lwith means, substantially as described, to prevent its rotation with the shaft.

14. The combination,with a revolving shaft having a` projection T-shaped'in cross-section, of a two-part hinged drum havin ga corresponding groove and means for detachably securing said drinn tothe shaft, as and for the purpose described.

AUGUST C. KRUEGER.

Witnesses:

JNO. G. ELLIOTT, JAMES H. GoYNn.

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